New - Help with 2004 Saab 9-5

Hey Everybody,
Is anybody familiar with the 2004 Saab 9-5? The stereo is not a standard DIN (single/double) unit. The head unit is separate from the CD player, which is separate from the display. I'd like to install a double DIN touchscreen, or a single DIN motorized with a small form factor pc in a single DIN case. Anybody know if it's possible, or does anybody have any more information on what is possible in the car?
Peace and blessings,
Jeremy